I have spoken with GRT1999 and this is way too expensive IMO. I could buy a third gen and have it ready to go for the price of the rear alone. I am going to do a 8.8, suspend it with the transverse spring and see who complains about it not being "stock susp.".

I have spoken with GRT1999 and this is way too expensive IMO. I could buy a third gen and have it ready to go for the price of the rear alone. I am going to do a 8.8, suspend it with the transverse spring and see who complains about it not being "stock susp.".

It's not cheap, but some guys want the IRS.

That's why I bought a retired GenII race car.

I posted mainly as info. Tom's still probably has prices on his web site.

I have spoken with GRT1999 and this is way too expensive IMO. I could buy a third gen and have it ready to go for the price of the rear alone. I am going to do a 8.8, suspend it with the transverse spring and see who complains about it not being "stock susp.".

One other comment. Greenwood used to "cheat" the rules on stock suspension by installing coil-overs and leaving a one leaf transverse spring so it was "stock." Check out his website there's lots of old vette race info. I think it is greenwoodscorvettes.com.

I allways considered the IRS in corvetts to be the weak point both strenght and financialy when building a Corvette if you can get past the price of the car to build. I think a 12 bolt swap similar to the one posted previously is the way to go. Compared to the cost of making the independent stuff grenade proof, you can build it with relatively cheap and common parts and make your ride alot more bullet proof for possibly less. Think of it this way, you have alot less points of potential failure with a solid axle swap. I wonder if these solid axle cars launch level or if you need to use a anti sway bar similar to a A/G body set up to avoide tilting on launch. I sure would like to build one of these some day. I will add it to my to do list.

This guy runs a Tom's 12 bolt conversion IRS and their HD halfshafts and axles. Only down side is the cost.

I've heard rumours that Tom is only selling the conversion parts now, but a guy on the internet GRT1999 is building them with Tom's parts.

Tom's in-house car runs 8's with one of these according to his website.

Wow, kind of an honor to have someone else post pics of our car on yellowbullet. Yes we do run the Tom's setup, it is very relaible. We have had one ring gear failure in 8 seasons, with hundreds of passes. There are a few things about the geometry and physics of the C3 rear end that are key to making them survive. The tom's stuff works, and yes he is just selling parts now. The problem with doing a straight axle conversion is that it has to be done RIGHT. if you use the stock style swingarms, your pinion angle changes in direct relation to the arc, same as a laddar bar but shorter. A 4 link would be better, but its still a shorter arm setup. I would have no issues with the tom's stuff down to 5.70's or even a little faster. If you have any questions feel free to ask.

By the way if you wanted to do a stocker style straight axle, the only man to talk to is Jimmy Parker (dan Parker's father).